Results 31 to 40 of about 63,263 (157)

Advanced extravehicular activity systems requirements definition study. Phase 2: Extravehicular activity at a lunar base [PDF]

The focus is on Extravehicular Activity (EVA) systems requirements definition for an advanced space mission: remote-from-main base EVA on the Moon. The lunar environment, biomedical considerations, appropriate hardware design criteria, hardware and ...
Carr, Gerald P., Neal, Valerie, Pogue, William, Schmitt, Harrison H., Schulze, Arthur E., Shields, Nicholas, Jr.   +5 more
core   +1 more source

Omnidirectional joint Patent [PDF]

, 1970
Cord restraint system for pressure suit ...
Baker, M. E., Hardy, J. C., Marroni, M. A., Jr.   +2 more
core   +1 more source

The use of anti-gravity suits for the control of critical intra-abdominal hemmorhage [PDF]

The history and use as well as the physiology of the use of antigravity suits for the control of critical intra-abdominal hemorrhages is reviewed.
Kravik, S., Landmark, K.
core   +1 more source

Fractal properties of quantum spacetime

, 2009
We show that in general a spacetime having a quantum group symmetry has also a scale dependent fractal dimension which deviates from its classical value at short scales, a phenomenon that resembles what observed in some approaches to quantum gravity.
Dario Benedetti, G. Amelino-Camelia, M. Niedermaier, S. Giller   +3 more
core   +1 more source

Investigating the Effects of Center of Gravity (CoG) Shift Due to a Simulated Exploration Extravehicular Mobility Unit (xEMU) Suit on Balance

Applied Sciences
Maintaining balance is critical to minimizing astronauts’ risk of falling and reducing injury or suit damage. Previous studies involving spacesuits have not examined the effects of the superior shift of the center of gravity (CoG) on astronauts’ ability to balance.
Roni A. Romero Melendez, Lara A. Thompson   +1 more
openaire   +2 more sources

Brown's moduli spaces of curves and the gravity operad

, 2017
This paper is built on the following observation: the purity of the mixed Hodge structure on the cohomology of Brown's moduli spaces is essentially equivalent to the freeness of the dihedral operad underlying the gravity operad.
Dupont, Clément, Vallette, Bruno
core   +3 more sources

Tests of an alternate mobile transporter and extravehicular activity assembly procedure for the Space Station Freedom truss [PDF]

Results are presented from a ground test program of an alternate mobile transporter (MT) concept and extravehicular activity (EVA) assembly procedure for the Space Station Freedom (SSF) truss keel. A three-bay orthogonal tetrahedral truss beam consisting
Bush, Harold G., Heard, Walter L., Jr., Jensen, J. Kermit, Lake, Mark S., Phelps, James E., Wallsom, Richard E., Watson, Judith J.   +6 more
core   +1 more source

Technology study of passive control of humidity in space suits [PDF]

Water vapor condensation and adsorption techniques for passive humidity control in space ...
Bentilla, E. W., Cafaro, C., Shlosinger, A. P., Woo, W.   +3 more
core   +1 more source

Spacesuit guidebook [PDF]

This guidebook is designed to supplement the Spacesuit wall chart (WAL-114) published by the Education Affairs Division, January 1990. The wall chart depicts Astronaut Bruce McCandless on his historic first untethered spacewalk using the manned ...

core   +1 more source

Modified Truncated Randomized Singular Value Decomposition (MTRSVD) Algorithms for Large Scale Discrete Ill-posed Problems with General-Form Regularization

, 2018
In this paper, we propose new randomization based algorithms for large scale linear discrete ill-posed problems with general-form regularization: ${\min} \|Lx\|$ subject to ${\min} \|Ax - b\|$, where $L$ is a regularization matrix.
Jia, Zhongxiao, Yang, Yanfei
core   +1 more source